package uk.ac.aber.paws.client.net;

import java.net.*;
import java.util.*;

/**
 * @author Rob Johnson, Aberystwyth University
 * @email rob.johnson@aber.ac.uk
 * @date 16th August 2011
 * 
 * NetworkChecks.java
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

public class NetworkChecks {

	/**
	 * This reads the parameters of the network card and checks if interface is connected.
	 * @return Returns true if the interface is connected.
	 */
	public static boolean checkNetworkIsUp() {
		
		try {
			
			Enumeration<NetworkInterface> interfaces = NetworkInterface.getNetworkInterfaces();   
			
			while (interfaces.hasMoreElements()) {   
				NetworkInterface nic = interfaces.nextElement();   
		
				if (nic.isUp()) {
					return true;
				}
			} 
		}
		catch (Exception ex) {
			
		}
		return false; 
	}
}
